h4nd Posted August 3, 2022 Share Posted August 3, 2022 If only there was a convenient source of smoke on the vehicle, so you could video and watch the airflow 1 1 2 Quote Link to comment Share on other sites More sharing options...
Stu Posted August 3, 2022 Share Posted August 3, 2022 ^ This test will need to repeated several times so we have an adequate data pool to draw conclusions from. Just saying @Roman can be on graph duty 5 1 Quote Link to comment Share on other sites More sharing options...
KKtrips Posted August 3, 2022 Share Posted August 3, 2022 Joining the helpful suggestion team, whats the AFR like at idle? can you fatten it up a bit? Lean equals HOT water temps. If that is not an issue, then if you are looking for a fan that moves MUCHO air, then go to Pickapart and look at the Volvo's grab their fan, the wiring and relays. They are super simple to figure out and they have 2 speeds fucking fast, and even faster again, sounds like a fuckin Fokker Friendship taxi-ing for take off. https://www.therangerstation.com/tech_library/volvo_electric_fan.shtml 3 Quote Link to comment Share on other sites More sharing options...
KKtrips Posted August 3, 2022 Share Posted August 3, 2022 The fan unit look like this - all the wiring a direct positive and negative feed to the battery and a pair of wires back to a 2 stage toggle switch in dash (With my new motor I am going to wire one side to a thermo switch so stage 1 will turn on automatically and put stage 2 to an override for when I notice it getting a bit scorchy) 3 Quote Link to comment Share on other sites More sharing options...
cletus Posted August 3, 2022 Share Posted August 3, 2022 Do you know how thick the fan is at the motor? That's the reason I haven't fitted a big electric fan, the rad is fairly close to the water pump pulley Quote Link to comment Share on other sites More sharing options...
cletus Posted August 3, 2022 Share Posted August 3, 2022 5 hours ago, RUNAMUCK said: Possibly a derp question, But are you 100% certain your 1960s guage is reading correctly? I've had issues in the past with ancient factory guages. Is the sender a proper match to the guage as well? Yeah, it's a new auto meter gauge, and it boils over at the temp you would expect 1 Quote Link to comment Share on other sites More sharing options...
KKtrips Posted August 3, 2022 Share Posted August 3, 2022 2 minutes ago, cletus said: Do you know how thick the fan is at the motor? That's the reason I haven't fitted a big electric fan, the rad is fairly close to the water pump pulley My guess is that it is thinner than that shroud looks in the photos, but they are a bit thicker than I'd like, but only at the fan motor, however I did have to change the bolts holding my water pump on to countersunk jobbies to give me enough clearance. But I also have a dumb front crossmember that gets in the way and had to make a weird shaped fan shroud which spaced the fan blades an inch away from the radiator fins. TLDR - the fan blades and housing are not crazy thick, bu the motor is chunky, I can measure on Friday day and give you some actual measurements. They are actually a huge diameter though and if I mount it flat against my radiator, an inch of fan blade would sit above or below the radiator fins. 2 1 Quote Link to comment Share on other sites More sharing options...
KKtrips Posted August 3, 2022 Share Posted August 3, 2022 Just got the dimensions from the internet. Please excuse the freedom units. Once removed from the shroud, this fan is about 4 inches deep from the end of the motor to the furthest point on the front of the fan. After it is removed, you'll find that the OUTER RING is about 17.5 inches across. The actual fan blade portion diameter on this fan is 388 mm (15.27 inches) 1 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted August 3, 2022 Share Posted August 3, 2022 I think I found the same 1998 spec website, haha Thanks. Its quite neat that the fan unbolts from the rest of the shroud Quote Link to comment Share on other sites More sharing options...
MaxPower Posted August 4, 2022 Share Posted August 4, 2022 Have you tried going for a drive with the hood off? Does it still boil over at idle with the bonnet up? Is it worth going to an electric water pump so you can run a big fuck off electric fan? Quote Link to comment Share on other sites More sharing options...
cletus Posted August 4, 2022 Share Posted August 4, 2022 Still gets hot with the hood up, I haven't removed it. Driving around it's not too bad, it's more an idling and not moving issue Hadn't really considered an EWP yet Quote Link to comment Share on other sites More sharing options...
KKtrips Posted August 5, 2022 Share Posted August 5, 2022 There are some thoroughly hairy mopars running around without an EWP and not overheating, so it has to be either a water to air-flow issue or tuning issue. I'm leaning towards air-flow cos Clint ain't no dummy and the tuning issues should be within a range that it won't fuck with the temps, so either there isn't enough cool air passing over the rad or the water is not in the rad long enough to cool down. When you pulled t-stat out, did you leave a restrictor in place? Quote Link to comment Share on other sites More sharing options...
Hemi Posted August 5, 2022 Share Posted August 5, 2022 I've only skim read, but you mentioned something about the intercooler could you add side thingies to it so the fan is pulling straight through the "assembly" instead of just the rad being the one with the pull. I'm Wondering if there's turbulence of pull through the intercooler vs pull going around/ under it. Prob not, don't have wind tunnel. Do you have oil temp and coolant gauges, can tell you heaps as the oil is usually way.more stable so if both are xx and then coolant jumps up but the oil stays the same after half and hour then maybe it is a flow issue? Iunno too many beers deep now. Oh, and are you sure you don't have a rag in one of the rad fittings. Don't laugh, it has happened. 2 Quote Link to comment Share on other sites More sharing options...
Hemi Posted August 5, 2022 Share Posted August 5, 2022 1 hour ago, KKtrips said: There are some thoroughly hairy mopars running around without an EWP and not overheating, so it has to be either a water to air-flow issue or tuning issue. I'm leaning towards air-flow cos Clint ain't no dummy and the tuning issues should be within a range that it won't fuck with the temps, so either there isn't enough cool air passing over the rad or the water is not in the rad long enough to cool down. When you pulled t-stat out, did you leave a restrictor in place? This s is a good point, don't you have a ir thermometer? Check the in vs out temp Quote Link to comment Share on other sites More sharing options...
M_C Posted August 7, 2022 Share Posted August 7, 2022 My 351 Clevo had similar issues getting hot when idling for long time or slow traffic on hot days. Turned out to be the wrong thermostat for 351C in it so when hot and open the hot water still circulated through the heads to get even hotter. -May have had 351W thermostat in it? Swapping to correct thermostat helped heaps as bypass then properly blocks off to send hot water just to radiator. Now runs much cooler stationary on hot days and going up slow hills. I see you have already tried a couple of different thermostats, but not sure if your engine has similar set up where the thermostat could be mixed up? 1 Quote Link to comment Share on other sites More sharing options...
datlow Posted September 11, 2022 Share Posted September 11, 2022 Time for some stationary load testing? This is how i envision"Fine tuning" 1 Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted September 12, 2022 Author Share Posted September 12, 2022 I heard valiants cant do skids...... 1 1 Quote Link to comment Share on other sites More sharing options...
cletus Posted September 12, 2022 Share Posted September 12, 2022 I wouldn't know Bart, I'm a grown up and would never do anything like that 1 6 1 Quote Link to comment Share on other sites More sharing options...
RUNAMUCK Posted October 12, 2022 Author Share Posted October 12, 2022 Awww fuck yeah!!!!! That is all....... Quote Link to comment Share on other sites More sharing options...
Goat Posted October 16, 2022 Share Posted October 16, 2022 Jeeze that engine bay is clean. You must be excited Clint! (That's its almost ready to hoon, not that your engine bay is so clean...) 1 Quote Link to comment Share on other sites More sharing options...
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